TROUBLESHOOTING |
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Symptom |
| Possible Cause |
| Corrective Action | |||
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No Cool |
| 1. | SYSTEM button not pressed to display COOL. |
| Set SYSTEM button until COOL is displayed and | ||
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| raise temperature below room temperature. | |
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| 2. Loose connection to thermostat or system. |
| Verify thermostat and system wires are securely | ||
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| attached. | |
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| 3. | Cooling system requires service or |
| Same procedure as diagnostic for No Heat | |
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| thermostat requires replacement. |
| condition except press the SYSTEM button until | |
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| COOL is displayed and lower the setpoint below | |
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| room temperature.There may be up to a five minute | |
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| delay before the thermostat clicks in Cooling. | |
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Heat, Cool or Fan Runs Constantly. |
| 1. | Possible short in wiring. |
| Check each wire connection to verify they are not | ||
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| 2. | Possible short in thermostat. |
| shorted or touching together. No bare wire should | |
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| 3. Possible short in Heat/Cool/Fan system. |
| out from under terminal screws.Try resetting the | ||
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| 4. | FAN button pressed to display FAN ON. |
| thermostat as described on the previous page. If | |
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| the condition persists the manufacturer of your | |
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| system or service person can instruct you on how | |
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| to test the Heat/Cool system for correct operation.If | |
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| the system operates correctly, replace the thermostat. | |
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Furnace Cycles Too Fast or Too Slow |
| 1. | The location of the thermostat and/or the size |
| Digital thermostats normally provide precise | ||
(narrow or wide temperature swing) |
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| of the Heating System equipment may be |
| temperature control and may cycle faster than | ||
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| influencing the cycle rate. |
| some older mechanical models.A faster cycle | |
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| rate means the unit turns on on off more frequently | |
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| but runs for a shorter time so there is no increase | |
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| in energy use. If you would like to increase the | |
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| cycle time, refer to page 6 under Installer Table for | |
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| settings. If an acceptable cycle rate is not acheived | |
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| by the adjustment in the Installer Table then you | |
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| may want to contact a local heating and air | |
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| conditioning service person for further suggestions. | |
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Cooling Cycles Too Fast or Too Slow |
| 1. | The location of the thermostat and/or the size |
| The cycle rate for cooling is fixed and can not be | ||
(narrow or wide temperature swing) |
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| of the Cooling System can influence the |
| adjusted. Contact a local service person for | ||
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| rate. |
| suggestions. | |
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Thermostat Setting and Thermostat |
| 1. | Thermostat thermometer setting requires |
| The thermometer can be adjusted +/- 5 degrees. | ||
Thermometer Disagree |
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| adjustment. |
| See Temperature Display Adjustment in the | ||
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| Operating Manual under Configuration. | |
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| Thermostat Display Shows CHCK PAD, |
| 1. | Thermostat service indicators. |
| These indicators can be reset or modified in the | |
CHNG FLTR, CALL SERV UV, CALL SERV |
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| service button menu (see pg. 8). | ||
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11
